Boron tribromide → HCID 22459006, compound

HRID 2185056Notes

Reaction equation

HRID 2185056 reaction equation
[CH3:1][C:2]([CH3:16])([CH3:15])[CH2:3][C:4]1[C:8]2[CH:9]=[CH:10][C:11]([O:13]C)=[CH:12][C:7]=2[O:6][CH:5]=1.B(Br)(Br)Br>C(Cl)Cl>[CH3:1][C:2]([CH3:16])([CH3:15])[CH2:3][C:4]1[C:8]2[CH:9]=[CH:10][C:11]([OH:13])=[CH:12][C:7]=2[O:6][CH:5]=1

Participants

4

Reactant 2

HCID 25134Boron tribromideHCID 22459083HCID 22459083, compound

Product 1

HCID 22459006HCID 22459006, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a −10° C. solution of the product of Step D (2.379 grams) in dry methylene chloride (35 mL) was added 1M boron tribromide solution (CH2Cl2; 3.70 mL). Warming to ambient temperature was followed by stirring for 1 hour. The reaction was partitioned between isopropyl acetate and aqueous sodium bicarbonate. The organic was washed twice with water and dried over magnesium sulfate. Filtration and removal of volatiles provided a residue which was chromatographed over silica gel (5:1 hex/ethyl acetate), giving the title compound.

Workup

  1. customThe reaction was partitioned between isopropyl acetate and aqueous sodium bicarbonate
  2. washThe organic was washed twice with water
  3. dry with materialdried over magnesium sulfate
  4. filtrationFiltration and removal of volatiles
  5. customprovided a residue which
  6. customwas chromatographed over silica gel (5:1 hex/ethyl acetate)

Sources & evidence

ORD record
ord-1a81473db01740c9b3a1a6406636a0c7
Source dataset
uspto-grants-2002_06
Patent number
US06399640B1

Reaction notes

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